997ea58eb9
For more clearance what the functions actually do, usb_buffer_alloc() is renamed to usb_alloc_coherent() usb_buffer_free() is renamed to usb_free_coherent() They should only be used in code which really needs DMA coherency. All call sites have been changed accordingly, except for staging drivers. Signed-off-by: Daniel Mack <daniel@caiaq.de> Cc: Alan Stern <stern@rowland.harvard.edu> Cc: Pedro Ribeiro <pedrib@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
952 lines
24 KiB
C
952 lines
24 KiB
C
/*
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* Apple USB Touchpad (for post-February 2005 PowerBooks and MacBooks) driver
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*
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* Copyright (C) 2001-2004 Greg Kroah-Hartman (greg@kroah.com)
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* Copyright (C) 2005-2008 Johannes Berg (johannes@sipsolutions.net)
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* Copyright (C) 2005-2008 Stelian Pop (stelian@popies.net)
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* Copyright (C) 2005 Frank Arnold (frank@scirocco-5v-turbo.de)
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* Copyright (C) 2005 Peter Osterlund (petero2@telia.com)
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* Copyright (C) 2005 Michael Hanselmann (linux-kernel@hansmi.ch)
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* Copyright (C) 2006 Nicolas Boichat (nicolas@boichat.ch)
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* Copyright (C) 2007-2008 Sven Anders (anders@anduras.de)
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*
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* Thanks to Alex Harper <basilisk@foobox.net> for his inputs.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*/
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#include <linux/kernel.h>
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#include <linux/errno.h>
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#include <linux/init.h>
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#include <linux/slab.h>
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#include <linux/module.h>
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#include <linux/usb/input.h>
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/*
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* Note: We try to keep the touchpad aspect ratio while still doing only
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* simple arithmetics:
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* 0 <= x <= (xsensors - 1) * xfact
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* 0 <= y <= (ysensors - 1) * yfact
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*/
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struct atp_info {
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int xsensors; /* number of X sensors */
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int xsensors_17; /* 17" models have more sensors */
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int ysensors; /* number of Y sensors */
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int xfact; /* X multiplication factor */
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int yfact; /* Y multiplication factor */
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int datalen; /* size of USB transfers */
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void (*callback)(struct urb *); /* callback function */
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};
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static void atp_complete_geyser_1_2(struct urb *urb);
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static void atp_complete_geyser_3_4(struct urb *urb);
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static const struct atp_info fountain_info = {
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.xsensors = 16,
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.xsensors_17 = 26,
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.ysensors = 16,
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.xfact = 64,
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.yfact = 43,
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.datalen = 81,
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.callback = atp_complete_geyser_1_2,
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};
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static const struct atp_info geyser1_info = {
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.xsensors = 16,
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.xsensors_17 = 26,
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.ysensors = 16,
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.xfact = 64,
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.yfact = 43,
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.datalen = 81,
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.callback = atp_complete_geyser_1_2,
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};
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static const struct atp_info geyser2_info = {
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.xsensors = 15,
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.xsensors_17 = 20,
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.ysensors = 9,
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.xfact = 64,
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.yfact = 43,
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.datalen = 64,
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.callback = atp_complete_geyser_1_2,
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};
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static const struct atp_info geyser3_info = {
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.xsensors = 20,
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.ysensors = 10,
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.xfact = 64,
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.yfact = 64,
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.datalen = 64,
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.callback = atp_complete_geyser_3_4,
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};
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static const struct atp_info geyser4_info = {
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.xsensors = 20,
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.ysensors = 10,
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.xfact = 64,
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.yfact = 64,
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.datalen = 64,
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.callback = atp_complete_geyser_3_4,
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};
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#define ATP_DEVICE(prod, info) \
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{ \
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.match_flags = USB_DEVICE_ID_MATCH_DEVICE | \
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USB_DEVICE_ID_MATCH_INT_CLASS | \
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USB_DEVICE_ID_MATCH_INT_PROTOCOL, \
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.idVendor = 0x05ac, /* Apple */ \
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.idProduct = (prod), \
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.bInterfaceClass = 0x03, \
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.bInterfaceProtocol = 0x02, \
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.driver_info = (unsigned long) &info, \
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}
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/*
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* Table of devices (Product IDs) that work with this driver.
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* (The names come from Info.plist in AppleUSBTrackpad.kext,
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* According to Info.plist Geyser IV is the same as Geyser III.)
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*/
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static struct usb_device_id atp_table[] = {
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/* PowerBooks Feb 2005, iBooks G4 */
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ATP_DEVICE(0x020e, fountain_info), /* FOUNTAIN ANSI */
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ATP_DEVICE(0x020f, fountain_info), /* FOUNTAIN ISO */
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ATP_DEVICE(0x030a, fountain_info), /* FOUNTAIN TP ONLY */
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ATP_DEVICE(0x030b, geyser1_info), /* GEYSER 1 TP ONLY */
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/* PowerBooks Oct 2005 */
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ATP_DEVICE(0x0214, geyser2_info), /* GEYSER 2 ANSI */
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ATP_DEVICE(0x0215, geyser2_info), /* GEYSER 2 ISO */
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ATP_DEVICE(0x0216, geyser2_info), /* GEYSER 2 JIS */
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/* Core Duo MacBook & MacBook Pro */
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ATP_DEVICE(0x0217, geyser3_info), /* GEYSER 3 ANSI */
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ATP_DEVICE(0x0218, geyser3_info), /* GEYSER 3 ISO */
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ATP_DEVICE(0x0219, geyser3_info), /* GEYSER 3 JIS */
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/* Core2 Duo MacBook & MacBook Pro */
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ATP_DEVICE(0x021a, geyser4_info), /* GEYSER 4 ANSI */
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ATP_DEVICE(0x021b, geyser4_info), /* GEYSER 4 ISO */
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ATP_DEVICE(0x021c, geyser4_info), /* GEYSER 4 JIS */
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/* Core2 Duo MacBook3,1 */
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ATP_DEVICE(0x0229, geyser4_info), /* GEYSER 4 HF ANSI */
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ATP_DEVICE(0x022a, geyser4_info), /* GEYSER 4 HF ISO */
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ATP_DEVICE(0x022b, geyser4_info), /* GEYSER 4 HF JIS */
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/* Terminating entry */
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{ }
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};
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MODULE_DEVICE_TABLE(usb, atp_table);
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/* maximum number of sensors */
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#define ATP_XSENSORS 26
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#define ATP_YSENSORS 16
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/* amount of fuzz this touchpad generates */
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#define ATP_FUZZ 16
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/* maximum pressure this driver will report */
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#define ATP_PRESSURE 300
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/*
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* Threshold for the touchpad sensors. Any change less than ATP_THRESHOLD is
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* ignored.
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*/
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#define ATP_THRESHOLD 5
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/* Geyser initialization constants */
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#define ATP_GEYSER_MODE_READ_REQUEST_ID 1
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#define ATP_GEYSER_MODE_WRITE_REQUEST_ID 9
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#define ATP_GEYSER_MODE_REQUEST_VALUE 0x300
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#define ATP_GEYSER_MODE_REQUEST_INDEX 0
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#define ATP_GEYSER_MODE_VENDOR_VALUE 0x04
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/**
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* enum atp_status_bits - status bit meanings
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*
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* These constants represent the meaning of the status bits.
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* (only Geyser 3/4)
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*
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* @ATP_STATUS_BUTTON: The button was pressed
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* @ATP_STATUS_BASE_UPDATE: Update of the base values (untouched pad)
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* @ATP_STATUS_FROM_RESET: Reset previously performed
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*/
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enum atp_status_bits {
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ATP_STATUS_BUTTON = BIT(0),
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ATP_STATUS_BASE_UPDATE = BIT(2),
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ATP_STATUS_FROM_RESET = BIT(4),
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};
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/* Structure to hold all of our device specific stuff */
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struct atp {
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char phys[64];
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struct usb_device *udev; /* usb device */
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struct urb *urb; /* usb request block */
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u8 *data; /* transferred data */
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struct input_dev *input; /* input dev */
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const struct atp_info *info; /* touchpad model */
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bool open;
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bool valid; /* are the samples valid? */
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bool size_detect_done;
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bool overflow_warned;
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int x_old; /* last reported x/y, */
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int y_old; /* used for smoothing */
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u8 xy_cur[ATP_XSENSORS + ATP_YSENSORS];
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u8 xy_old[ATP_XSENSORS + ATP_YSENSORS];
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int xy_acc[ATP_XSENSORS + ATP_YSENSORS];
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int idlecount; /* number of empty packets */
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struct work_struct work;
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};
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#define dbg_dump(msg, tab) \
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if (debug > 1) { \
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int __i; \
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printk(KERN_DEBUG "appletouch: %s", msg); \
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for (__i = 0; __i < ATP_XSENSORS + ATP_YSENSORS; __i++) \
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printk(" %02x", tab[__i]); \
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printk("\n"); \
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}
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#define dprintk(format, a...) \
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do { \
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if (debug) \
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printk(KERN_DEBUG format, ##a); \
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} while (0)
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MODULE_AUTHOR("Johannes Berg");
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MODULE_AUTHOR("Stelian Pop");
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MODULE_AUTHOR("Frank Arnold");
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MODULE_AUTHOR("Michael Hanselmann");
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MODULE_AUTHOR("Sven Anders");
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MODULE_DESCRIPTION("Apple PowerBook and MacBook USB touchpad driver");
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MODULE_LICENSE("GPL");
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/*
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* Make the threshold a module parameter
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*/
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static int threshold = ATP_THRESHOLD;
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module_param(threshold, int, 0644);
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MODULE_PARM_DESC(threshold, "Discard any change in data from a sensor"
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" (the trackpad has many of these sensors)"
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" less than this value.");
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static int debug;
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module_param(debug, int, 0644);
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MODULE_PARM_DESC(debug, "Activate debugging output");
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/*
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* By default newer Geyser devices send standard USB HID mouse
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* packets (Report ID 2). This code changes device mode, so it
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* sends raw sensor reports (Report ID 5).
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*/
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static int atp_geyser_init(struct usb_device *udev)
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{
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char *data;
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int size;
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int i;
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int ret;
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data = kmalloc(8, GFP_KERNEL);
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if (!data) {
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err("Out of memory");
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return -ENOMEM;
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}
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size = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
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ATP_GEYSER_MODE_READ_REQUEST_ID,
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USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
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ATP_GEYSER_MODE_REQUEST_VALUE,
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ATP_GEYSER_MODE_REQUEST_INDEX, data, 8, 5000);
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if (size != 8) {
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dprintk("atp_geyser_init: read error\n");
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for (i = 0; i < 8; i++)
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dprintk("appletouch[%d]: %d\n", i, data[i]);
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err("Failed to read mode from device.");
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ret = -EIO;
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goto out_free;
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}
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/* Apply the mode switch */
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data[0] = ATP_GEYSER_MODE_VENDOR_VALUE;
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size = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
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ATP_GEYSER_MODE_WRITE_REQUEST_ID,
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USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
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ATP_GEYSER_MODE_REQUEST_VALUE,
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ATP_GEYSER_MODE_REQUEST_INDEX, data, 8, 5000);
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if (size != 8) {
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dprintk("atp_geyser_init: write error\n");
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for (i = 0; i < 8; i++)
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dprintk("appletouch[%d]: %d\n", i, data[i]);
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err("Failed to request geyser raw mode");
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ret = -EIO;
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goto out_free;
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}
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ret = 0;
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out_free:
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kfree(data);
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return ret;
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}
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/*
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* Reinitialise the device. This usually stops stream of empty packets
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* coming from it.
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*/
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static void atp_reinit(struct work_struct *work)
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{
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struct atp *dev = container_of(work, struct atp, work);
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struct usb_device *udev = dev->udev;
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int retval;
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dprintk("appletouch: putting appletouch to sleep (reinit)\n");
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atp_geyser_init(udev);
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retval = usb_submit_urb(dev->urb, GFP_ATOMIC);
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if (retval)
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err("atp_reinit: usb_submit_urb failed with error %d",
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retval);
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}
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static int atp_calculate_abs(int *xy_sensors, int nb_sensors, int fact,
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int *z, int *fingers)
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{
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int i;
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/* values to calculate mean */
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int pcum = 0, psum = 0;
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int is_increasing = 0;
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*fingers = 0;
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for (i = 0; i < nb_sensors; i++) {
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if (xy_sensors[i] < threshold) {
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if (is_increasing)
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is_increasing = 0;
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continue;
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}
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/*
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* Makes the finger detection more versatile. For example,
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* two fingers with no gap will be detected. Also, my
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* tests show it less likely to have intermittent loss
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* of multiple finger readings while moving around (scrolling).
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*
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* Changes the multiple finger detection to counting humps on
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* sensors (transitions from nonincreasing to increasing)
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* instead of counting transitions from low sensors (no
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* finger reading) to high sensors (finger above
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* sensor)
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*
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* - Jason Parekh <jasonparekh@gmail.com>
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*/
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if (i < 1 ||
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(!is_increasing && xy_sensors[i - 1] < xy_sensors[i])) {
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(*fingers)++;
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is_increasing = 1;
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} else if (i > 0 && (xy_sensors[i - 1] - xy_sensors[i] > threshold)) {
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is_increasing = 0;
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}
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/*
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* Subtracts threshold so a high sensor that just passes the
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* threshold won't skew the calculated absolute coordinate.
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* Fixes an issue where slowly moving the mouse would
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* occasionally jump a number of pixels (slowly moving the
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* finger makes this issue most apparent.)
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*/
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pcum += (xy_sensors[i] - threshold) * i;
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psum += (xy_sensors[i] - threshold);
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}
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if (psum > 0) {
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*z = psum;
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return pcum * fact / psum;
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}
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return 0;
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}
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static inline void atp_report_fingers(struct input_dev *input, int fingers)
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{
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input_report_key(input, BTN_TOOL_FINGER, fingers == 1);
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input_report_key(input, BTN_TOOL_DOUBLETAP, fingers == 2);
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input_report_key(input, BTN_TOOL_TRIPLETAP, fingers > 2);
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}
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/* Check URB status and for correct length of data package */
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#define ATP_URB_STATUS_SUCCESS 0
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#define ATP_URB_STATUS_ERROR 1
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#define ATP_URB_STATUS_ERROR_FATAL 2
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static int atp_status_check(struct urb *urb)
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{
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struct atp *dev = urb->context;
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switch (urb->status) {
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case 0:
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/* success */
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break;
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case -EOVERFLOW:
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if (!dev->overflow_warned) {
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printk(KERN_WARNING "appletouch: OVERFLOW with data "
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"length %d, actual length is %d\n",
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dev->info->datalen, dev->urb->actual_length);
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dev->overflow_warned = true;
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}
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case -ECONNRESET:
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case -ENOENT:
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case -ESHUTDOWN:
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/* This urb is terminated, clean up */
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dbg("atp_complete: urb shutting down with status: %d",
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urb->status);
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return ATP_URB_STATUS_ERROR_FATAL;
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default:
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dbg("atp_complete: nonzero urb status received: %d",
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urb->status);
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return ATP_URB_STATUS_ERROR;
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}
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/* drop incomplete datasets */
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if (dev->urb->actual_length != dev->info->datalen) {
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dprintk("appletouch: incomplete data package"
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" (first byte: %d, length: %d).\n",
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dev->data[0], dev->urb->actual_length);
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return ATP_URB_STATUS_ERROR;
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}
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return ATP_URB_STATUS_SUCCESS;
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}
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static void atp_detect_size(struct atp *dev)
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{
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int i;
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/* 17" Powerbooks have extra X sensors */
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for (i = dev->info->xsensors; i < ATP_XSENSORS; i++) {
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if (dev->xy_cur[i]) {
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printk(KERN_INFO "appletouch: 17\" model detected.\n");
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input_set_abs_params(dev->input, ABS_X, 0,
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(dev->info->xsensors_17 - 1) *
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dev->info->xfact - 1,
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ATP_FUZZ, 0);
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break;
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}
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}
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}
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/*
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* USB interrupt callback functions
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*/
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/* Interrupt function for older touchpads: FOUNTAIN/GEYSER1/GEYSER2 */
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static void atp_complete_geyser_1_2(struct urb *urb)
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{
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int x, y, x_z, y_z, x_f, y_f;
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int retval, i, j;
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int key;
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struct atp *dev = urb->context;
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int status = atp_status_check(urb);
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if (status == ATP_URB_STATUS_ERROR_FATAL)
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return;
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else if (status == ATP_URB_STATUS_ERROR)
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goto exit;
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/* reorder the sensors values */
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if (dev->info == &geyser2_info) {
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memset(dev->xy_cur, 0, sizeof(dev->xy_cur));
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/*
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* The values are laid out like this:
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* Y1, Y2, -, Y3, Y4, -, ..., X1, X2, -, X3, X4, -, ...
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* '-' is an unused value.
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*/
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/* read X values */
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for (i = 0, j = 19; i < 20; i += 2, j += 3) {
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dev->xy_cur[i] = dev->data[j];
|
|
dev->xy_cur[i + 1] = dev->data[j + 1];
|
|
}
|
|
|
|
/* read Y values */
|
|
for (i = 0, j = 1; i < 9; i += 2, j += 3) {
|
|
dev->xy_cur[ATP_XSENSORS + i] = dev->data[j];
|
|
dev->xy_cur[ATP_XSENSORS + i + 1] = dev->data[j + 1];
|
|
}
|
|
} else {
|
|
for (i = 0; i < 8; i++) {
|
|
/* X values */
|
|
dev->xy_cur[i + 0] = dev->data[5 * i + 2];
|
|
dev->xy_cur[i + 8] = dev->data[5 * i + 4];
|
|
dev->xy_cur[i + 16] = dev->data[5 * i + 42];
|
|
if (i < 2)
|
|
dev->xy_cur[i + 24] = dev->data[5 * i + 44];
|
|
|
|
/* Y values */
|
|
dev->xy_cur[ATP_XSENSORS + i] = dev->data[5 * i + 1];
|
|
dev->xy_cur[ATP_XSENSORS + i + 8] = dev->data[5 * i + 3];
|
|
}
|
|
}
|
|
|
|
dbg_dump("sample", dev->xy_cur);
|
|
|
|
if (!dev->valid) {
|
|
/* first sample */
|
|
dev->valid = true;
|
|
dev->x_old = dev->y_old = -1;
|
|
|
|
/* Store first sample */
|
|
memcpy(dev->xy_old, dev->xy_cur, sizeof(dev->xy_old));
|
|
|
|
/* Perform size detection, if not done already */
|
|
if (unlikely(!dev->size_detect_done)) {
|
|
atp_detect_size(dev);
|
|
dev->size_detect_done = 1;
|
|
goto exit;
|
|
}
|
|
}
|
|
|
|
for (i = 0; i < ATP_XSENSORS + ATP_YSENSORS; i++) {
|
|
/* accumulate the change */
|
|
int change = dev->xy_old[i] - dev->xy_cur[i];
|
|
dev->xy_acc[i] -= change;
|
|
|
|
/* prevent down drifting */
|
|
if (dev->xy_acc[i] < 0)
|
|
dev->xy_acc[i] = 0;
|
|
}
|
|
|
|
memcpy(dev->xy_old, dev->xy_cur, sizeof(dev->xy_old));
|
|
|
|
dbg_dump("accumulator", dev->xy_acc);
|
|
|
|
x = atp_calculate_abs(dev->xy_acc, ATP_XSENSORS,
|
|
dev->info->xfact, &x_z, &x_f);
|
|
y = atp_calculate_abs(dev->xy_acc + ATP_XSENSORS, ATP_YSENSORS,
|
|
dev->info->yfact, &y_z, &y_f);
|
|
key = dev->data[dev->info->datalen - 1] & ATP_STATUS_BUTTON;
|
|
|
|
if (x && y) {
|
|
if (dev->x_old != -1) {
|
|
x = (dev->x_old * 3 + x) >> 2;
|
|
y = (dev->y_old * 3 + y) >> 2;
|
|
dev->x_old = x;
|
|
dev->y_old = y;
|
|
|
|
if (debug > 1)
|
|
printk(KERN_DEBUG "appletouch: "
|
|
"X: %3d Y: %3d Xz: %3d Yz: %3d\n",
|
|
x, y, x_z, y_z);
|
|
|
|
input_report_key(dev->input, BTN_TOUCH, 1);
|
|
input_report_abs(dev->input, ABS_X, x);
|
|
input_report_abs(dev->input, ABS_Y, y);
|
|
input_report_abs(dev->input, ABS_PRESSURE,
|
|
min(ATP_PRESSURE, x_z + y_z));
|
|
atp_report_fingers(dev->input, max(x_f, y_f));
|
|
}
|
|
dev->x_old = x;
|
|
dev->y_old = y;
|
|
|
|
} else if (!x && !y) {
|
|
|
|
dev->x_old = dev->y_old = -1;
|
|
input_report_key(dev->input, BTN_TOUCH, 0);
|
|
input_report_abs(dev->input, ABS_PRESSURE, 0);
|
|
atp_report_fingers(dev->input, 0);
|
|
|
|
/* reset the accumulator on release */
|
|
memset(dev->xy_acc, 0, sizeof(dev->xy_acc));
|
|
}
|
|
|
|
input_report_key(dev->input, BTN_LEFT, key);
|
|
input_sync(dev->input);
|
|
|
|
exit:
|
|
retval = usb_submit_urb(dev->urb, GFP_ATOMIC);
|
|
if (retval)
|
|
err("atp_complete: usb_submit_urb failed with result %d",
|
|
retval);
|
|
}
|
|
|
|
/* Interrupt function for older touchpads: GEYSER3/GEYSER4 */
|
|
|
|
static void atp_complete_geyser_3_4(struct urb *urb)
|
|
{
|
|
int x, y, x_z, y_z, x_f, y_f;
|
|
int retval, i, j;
|
|
int key;
|
|
struct atp *dev = urb->context;
|
|
int status = atp_status_check(urb);
|
|
|
|
if (status == ATP_URB_STATUS_ERROR_FATAL)
|
|
return;
|
|
else if (status == ATP_URB_STATUS_ERROR)
|
|
goto exit;
|
|
|
|
/* Reorder the sensors values:
|
|
*
|
|
* The values are laid out like this:
|
|
* -, Y1, Y2, -, Y3, Y4, -, ..., -, X1, X2, -, X3, X4, ...
|
|
* '-' is an unused value.
|
|
*/
|
|
|
|
/* read X values */
|
|
for (i = 0, j = 19; i < 20; i += 2, j += 3) {
|
|
dev->xy_cur[i] = dev->data[j + 1];
|
|
dev->xy_cur[i + 1] = dev->data[j + 2];
|
|
}
|
|
/* read Y values */
|
|
for (i = 0, j = 1; i < 9; i += 2, j += 3) {
|
|
dev->xy_cur[ATP_XSENSORS + i] = dev->data[j + 1];
|
|
dev->xy_cur[ATP_XSENSORS + i + 1] = dev->data[j + 2];
|
|
}
|
|
|
|
dbg_dump("sample", dev->xy_cur);
|
|
|
|
/* Just update the base values (i.e. touchpad in untouched state) */
|
|
if (dev->data[dev->info->datalen - 1] & ATP_STATUS_BASE_UPDATE) {
|
|
|
|
dprintk(KERN_DEBUG "appletouch: updated base values\n");
|
|
|
|
memcpy(dev->xy_old, dev->xy_cur, sizeof(dev->xy_old));
|
|
goto exit;
|
|
}
|
|
|
|
for (i = 0; i < ATP_XSENSORS + ATP_YSENSORS; i++) {
|
|
/* calculate the change */
|
|
dev->xy_acc[i] = dev->xy_cur[i] - dev->xy_old[i];
|
|
|
|
/* this is a round-robin value, so couple with that */
|
|
if (dev->xy_acc[i] > 127)
|
|
dev->xy_acc[i] -= 256;
|
|
|
|
if (dev->xy_acc[i] < -127)
|
|
dev->xy_acc[i] += 256;
|
|
|
|
/* prevent down drifting */
|
|
if (dev->xy_acc[i] < 0)
|
|
dev->xy_acc[i] = 0;
|
|
}
|
|
|
|
dbg_dump("accumulator", dev->xy_acc);
|
|
|
|
x = atp_calculate_abs(dev->xy_acc, ATP_XSENSORS,
|
|
dev->info->xfact, &x_z, &x_f);
|
|
y = atp_calculate_abs(dev->xy_acc + ATP_XSENSORS, ATP_YSENSORS,
|
|
dev->info->yfact, &y_z, &y_f);
|
|
key = dev->data[dev->info->datalen - 1] & ATP_STATUS_BUTTON;
|
|
|
|
if (x && y) {
|
|
if (dev->x_old != -1) {
|
|
x = (dev->x_old * 3 + x) >> 2;
|
|
y = (dev->y_old * 3 + y) >> 2;
|
|
dev->x_old = x;
|
|
dev->y_old = y;
|
|
|
|
if (debug > 1)
|
|
printk(KERN_DEBUG "appletouch: X: %3d Y: %3d "
|
|
"Xz: %3d Yz: %3d\n",
|
|
x, y, x_z, y_z);
|
|
|
|
input_report_key(dev->input, BTN_TOUCH, 1);
|
|
input_report_abs(dev->input, ABS_X, x);
|
|
input_report_abs(dev->input, ABS_Y, y);
|
|
input_report_abs(dev->input, ABS_PRESSURE,
|
|
min(ATP_PRESSURE, x_z + y_z));
|
|
atp_report_fingers(dev->input, max(x_f, y_f));
|
|
}
|
|
dev->x_old = x;
|
|
dev->y_old = y;
|
|
|
|
} else if (!x && !y) {
|
|
|
|
dev->x_old = dev->y_old = -1;
|
|
input_report_key(dev->input, BTN_TOUCH, 0);
|
|
input_report_abs(dev->input, ABS_PRESSURE, 0);
|
|
atp_report_fingers(dev->input, 0);
|
|
|
|
/* reset the accumulator on release */
|
|
memset(dev->xy_acc, 0, sizeof(dev->xy_acc));
|
|
}
|
|
|
|
input_report_key(dev->input, BTN_LEFT, key);
|
|
input_sync(dev->input);
|
|
|
|
/*
|
|
* Geysers 3/4 will continue to send packets continually after
|
|
* the first touch unless reinitialised. Do so if it's been
|
|
* idle for a while in order to avoid waking the kernel up
|
|
* several hundred times a second.
|
|
*/
|
|
|
|
/*
|
|
* Button must not be pressed when entering suspend,
|
|
* otherwise we will never release the button.
|
|
*/
|
|
if (!x && !y && !key) {
|
|
dev->idlecount++;
|
|
if (dev->idlecount == 10) {
|
|
dev->x_old = dev->y_old = -1;
|
|
dev->idlecount = 0;
|
|
schedule_work(&dev->work);
|
|
/* Don't resubmit urb here, wait for reinit */
|
|
return;
|
|
}
|
|
} else
|
|
dev->idlecount = 0;
|
|
|
|
exit:
|
|
retval = usb_submit_urb(dev->urb, GFP_ATOMIC);
|
|
if (retval)
|
|
err("atp_complete: usb_submit_urb failed with result %d",
|
|
retval);
|
|
}
|
|
|
|
static int atp_open(struct input_dev *input)
|
|
{
|
|
struct atp *dev = input_get_drvdata(input);
|
|
|
|
if (usb_submit_urb(dev->urb, GFP_ATOMIC))
|
|
return -EIO;
|
|
|
|
dev->open = 1;
|
|
return 0;
|
|
}
|
|
|
|
static void atp_close(struct input_dev *input)
|
|
{
|
|
struct atp *dev = input_get_drvdata(input);
|
|
|
|
usb_kill_urb(dev->urb);
|
|
cancel_work_sync(&dev->work);
|
|
dev->open = 0;
|
|
}
|
|
|
|
static int atp_handle_geyser(struct atp *dev)
|
|
{
|
|
struct usb_device *udev = dev->udev;
|
|
|
|
if (dev->info != &fountain_info) {
|
|
/* switch to raw sensor mode */
|
|
if (atp_geyser_init(udev))
|
|
return -EIO;
|
|
|
|
printk(KERN_INFO "appletouch: Geyser mode initialized.\n");
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int atp_probe(struct usb_interface *iface,
|
|
const struct usb_device_id *id)
|
|
{
|
|
struct atp *dev;
|
|
struct input_dev *input_dev;
|
|
struct usb_device *udev = interface_to_usbdev(iface);
|
|
struct usb_host_interface *iface_desc;
|
|
struct usb_endpoint_descriptor *endpoint;
|
|
int int_in_endpointAddr = 0;
|
|
int i, error = -ENOMEM;
|
|
const struct atp_info *info = (const struct atp_info *)id->driver_info;
|
|
|
|
/* set up the endpoint information */
|
|
/* use only the first interrupt-in endpoint */
|
|
iface_desc = iface->cur_altsetting;
|
|
for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) {
|
|
endpoint = &iface_desc->endpoint[i].desc;
|
|
if (!int_in_endpointAddr && usb_endpoint_is_int_in(endpoint)) {
|
|
/* we found an interrupt in endpoint */
|
|
int_in_endpointAddr = endpoint->bEndpointAddress;
|
|
break;
|
|
}
|
|
}
|
|
if (!int_in_endpointAddr) {
|
|
err("Could not find int-in endpoint");
|
|
return -EIO;
|
|
}
|
|
|
|
/* allocate memory for our device state and initialize it */
|
|
dev = kzalloc(sizeof(struct atp), GFP_KERNEL);
|
|
input_dev = input_allocate_device();
|
|
if (!dev || !input_dev) {
|
|
err("Out of memory");
|
|
goto err_free_devs;
|
|
}
|
|
|
|
dev->udev = udev;
|
|
dev->input = input_dev;
|
|
dev->info = info;
|
|
dev->overflow_warned = false;
|
|
|
|
dev->urb = usb_alloc_urb(0, GFP_KERNEL);
|
|
if (!dev->urb)
|
|
goto err_free_devs;
|
|
|
|
dev->data = usb_alloc_coherent(dev->udev, dev->info->datalen, GFP_KERNEL,
|
|
&dev->urb->transfer_dma);
|
|
if (!dev->data)
|
|
goto err_free_urb;
|
|
|
|
usb_fill_int_urb(dev->urb, udev,
|
|
usb_rcvintpipe(udev, int_in_endpointAddr),
|
|
dev->data, dev->info->datalen,
|
|
dev->info->callback, dev, 1);
|
|
|
|
error = atp_handle_geyser(dev);
|
|
if (error)
|
|
goto err_free_buffer;
|
|
|
|
usb_make_path(udev, dev->phys, sizeof(dev->phys));
|
|
strlcat(dev->phys, "/input0", sizeof(dev->phys));
|
|
|
|
input_dev->name = "appletouch";
|
|
input_dev->phys = dev->phys;
|
|
usb_to_input_id(dev->udev, &input_dev->id);
|
|
input_dev->dev.parent = &iface->dev;
|
|
|
|
input_set_drvdata(input_dev, dev);
|
|
|
|
input_dev->open = atp_open;
|
|
input_dev->close = atp_close;
|
|
|
|
set_bit(EV_ABS, input_dev->evbit);
|
|
|
|
input_set_abs_params(input_dev, ABS_X, 0,
|
|
(dev->info->xsensors - 1) * dev->info->xfact - 1,
|
|
ATP_FUZZ, 0);
|
|
input_set_abs_params(input_dev, ABS_Y, 0,
|
|
(dev->info->ysensors - 1) * dev->info->yfact - 1,
|
|
ATP_FUZZ, 0);
|
|
input_set_abs_params(input_dev, ABS_PRESSURE, 0, ATP_PRESSURE, 0, 0);
|
|
|
|
set_bit(EV_KEY, input_dev->evbit);
|
|
set_bit(BTN_TOUCH, input_dev->keybit);
|
|
set_bit(BTN_TOOL_FINGER, input_dev->keybit);
|
|
set_bit(BTN_TOOL_DOUBLETAP, input_dev->keybit);
|
|
set_bit(BTN_TOOL_TRIPLETAP, input_dev->keybit);
|
|
set_bit(BTN_LEFT, input_dev->keybit);
|
|
|
|
error = input_register_device(dev->input);
|
|
if (error)
|
|
goto err_free_buffer;
|
|
|
|
/* save our data pointer in this interface device */
|
|
usb_set_intfdata(iface, dev);
|
|
|
|
INIT_WORK(&dev->work, atp_reinit);
|
|
|
|
return 0;
|
|
|
|
err_free_buffer:
|
|
usb_free_coherent(dev->udev, dev->info->datalen,
|
|
dev->data, dev->urb->transfer_dma);
|
|
err_free_urb:
|
|
usb_free_urb(dev->urb);
|
|
err_free_devs:
|
|
usb_set_intfdata(iface, NULL);
|
|
kfree(dev);
|
|
input_free_device(input_dev);
|
|
return error;
|
|
}
|
|
|
|
static void atp_disconnect(struct usb_interface *iface)
|
|
{
|
|
struct atp *dev = usb_get_intfdata(iface);
|
|
|
|
usb_set_intfdata(iface, NULL);
|
|
if (dev) {
|
|
usb_kill_urb(dev->urb);
|
|
input_unregister_device(dev->input);
|
|
usb_free_coherent(dev->udev, dev->info->datalen,
|
|
dev->data, dev->urb->transfer_dma);
|
|
usb_free_urb(dev->urb);
|
|
kfree(dev);
|
|
}
|
|
printk(KERN_INFO "input: appletouch disconnected\n");
|
|
}
|
|
|
|
static int atp_recover(struct atp *dev)
|
|
{
|
|
int error;
|
|
|
|
error = atp_handle_geyser(dev);
|
|
if (error)
|
|
return error;
|
|
|
|
if (dev->open && usb_submit_urb(dev->urb, GFP_ATOMIC))
|
|
return -EIO;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int atp_suspend(struct usb_interface *iface, pm_message_t message)
|
|
{
|
|
struct atp *dev = usb_get_intfdata(iface);
|
|
|
|
usb_kill_urb(dev->urb);
|
|
return 0;
|
|
}
|
|
|
|
static int atp_resume(struct usb_interface *iface)
|
|
{
|
|
struct atp *dev = usb_get_intfdata(iface);
|
|
|
|
if (dev->open && usb_submit_urb(dev->urb, GFP_ATOMIC))
|
|
return -EIO;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int atp_reset_resume(struct usb_interface *iface)
|
|
{
|
|
struct atp *dev = usb_get_intfdata(iface);
|
|
|
|
return atp_recover(dev);
|
|
}
|
|
|
|
static struct usb_driver atp_driver = {
|
|
.name = "appletouch",
|
|
.probe = atp_probe,
|
|
.disconnect = atp_disconnect,
|
|
.suspend = atp_suspend,
|
|
.resume = atp_resume,
|
|
.reset_resume = atp_reset_resume,
|
|
.id_table = atp_table,
|
|
};
|
|
|
|
static int __init atp_init(void)
|
|
{
|
|
return usb_register(&atp_driver);
|
|
}
|
|
|
|
static void __exit atp_exit(void)
|
|
{
|
|
usb_deregister(&atp_driver);
|
|
}
|
|
|
|
module_init(atp_init);
|
|
module_exit(atp_exit);
|